JonR-- I don't use air either. I even had it my pick-up but had the system evacuated when I got the truck 3 yrs ago. I like the ozone layer. My get bys are--two 20" Patton air circulators. They move allot of air. Another trick I've learned is to restrict UV radiation( sunlight) coming into the house as much as possible. If fact most of the daylight hours the shades are drawn at my house. This makes a big difference.
Cycling, I have to say has really made a difference in the affect heat has on my body. I rode Friday(3-5:45 Pm) and out by KCI this morning(MS training ride.) It was hot, but it makes a big difference; increasing my heat tolerence. Of course my age is also a factor. I'm 38.
One oter thing I've learned is when it really gets hot I throw a mattress on the floor. lower to the floor is cooler. I generally only have to do this in extreme heat though.
anyhoo, this is what has worked for me. Ride long and prosper. Stan.